5
Figure 4
Rear view of an MSR 20-21
(1) SIC slot2
(2) SIC slot1
(3) Grounding terminal
(4) Power socket
(5) Power switch
(6) Fixed Ethernet port0 (LAN0)
(7) Fixed Ethernet port1 (LAN1)
(8) Console port (CON)
(9) Auxiliary port (AUX)
(10) USB interface
(11) CF card
(12) Fixed L2 switching port (LAN2 through LAN9)
Panel LEDs
The following table gives the features of MSR 20-21 router LEDs:
Table 4
Front panel LEDs description of an MSR 20-21 router
LED Description
PWR
Power LED:
•
ON means power is on.
•
OFF means power is off.
SYS
System operating LED:
•
Green and fast blinking means the system is booting.
•
Green and slow blinking means the system is operating normally.
•
Yellow and fast blinking means the system is malfunctioning.
•
Steady OFF means the system does not operate normally.
ESM
ESM module LED:
•
Green and slow blinking means the system is booting.
•
Steady green means ESM card is operation normally.
•
Steady yellow means ESM card is malfunctioning.
•
Steady OFF means no ESM card is present.
Table 5
The rear panel LEDs of an MSR 20-21 router
LED Description
LINK
•
OFF means no link is present.
•
ON means a link is present.